No in-tree board using that chipset has it not selected, so move selection from boards to southbridge. Change-Id: Ibfb7b294aa5007ac2f767d85e090572f85148bad Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/659 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)